Draft-equalizer.



No. 777,151. PATBNTED DEC. 13, 1904. W. T. SEELYE.

DRAFT EQUALIZER.

APPLIUAIION FILED APR. 30.1904.

NO MODEL.

.. nector upon the pulley on the opposite sides of` UNITED STATES Patented December 13, 1904.

PATENT OEEICE.

WILLIAM T. SEELYE, OF (JRESOO, IOVA, ASSIGNOR OF ONF-HALF TO CARL 1V. REED, OF ORESOO, IOWIA. i

DRAlFT-EQUALIZER.

CAPECIFIGATION forming part of Letters Patent N o. 777,151, dated December 13, 1904. Application liled April 30, 1904. Serial No. 205,835. (No model.)

To .ft2/Z whom t may concern:

Be it known that I, WILLIAM T. SEELYE, a citizen of the United States, and a resident of Oresco, Howard county, State of Iowa, have invented certain new and useful Improvements in Draft-Equalizers; and my preferred manner of carrying out the invention `is set forth in the following full, clear, and exact description, terminating with claims particularly specifying the novelty.

This invention relates to draft-equalizers, and is of that general type in which two unequal levers are pivoted on opposite sides of the pole and are connected by a flexible connector passing in rear of a guide member, such as a pulley, secured to the pole. The objection to these devices heretofore has been that unequal pressure was exerted by the conthe pole, thus tending to produce side draft.

It is the purpose of my invention to provide means whereby pressure of the connector upon the two sides of the guide member is equalized, side draft being thereby avoided.

In the accompanying' drawings, Figure 1 is a plan View of my device. Fig. 2 is a side view of the rear portion of the pole. Fig. 3 is a front elevation of the cross-bar, the unequal levers being broken away. Fig. 4 is a detail side view of the pulley-bracket and pulley. I

The numeral 1 designates the pole, on opposite sides of which are pivoted the unequal levers 2 and 3. These levers are preferably pivoted in an expanded cross-bar 4., formed by two pieces of bent metal 5 6, riveted tothe forward end of the pole, forming yokes 7 8. The rear end of the draft-pole is expanded to i form an open-sided chamber 9, in which is -of an angle 141 15.

pivoted a large pulley 10. A second pulley, 11, is pivoted to a bracket 12, secured to the pole and standing in the angle formed by the pole and long lever 3. A flexible -connector 13, here shown as a chain, is secured at opposite ends of the unequal levers and passes in rear of the large pulley, forming the two sides Side 15 is led inside of pulley 11, forming a rentrant angle whose sides are formed by side 15 and extension 16.

The rear end of the pole is provided with a yoke 17 or other attaching means.

While I have described the two guide members as pulleys, it is to be understood that other similar devices might be used without departing' from the spirit of my invention. Vhat is essential is that one guide member be mounted iixedly in rear of both levers and that the other guide member be mounted in the angle formed between the pole and the long arm, so as to produce a rentrant angle in the connector. By lixedly I Wish to be understood as meaning that these guide me1nbers are stationary with reference to the pole. Pulley 11 should be so located that sides 14 15 of the iii-st angle form substantially equal angles with the pole in the normal positions of the levers. By this means the pressure of the two sides of the angle of the connector upon the pulley 10 is equalized and swinging of the pole` is avoided. l/Vhile the distance from the point of attachment of the connector with the short arm to the pivot of this arm should always be less than the similar distance on the long arm, the leverage exerted by the horses may be varied within certain limits by attaching' the ends of the connector to two series of holes 19 in the levers. It is preferred, however, that side 14 be adjusted but little, so as to avoid destroying the equality of the angles formed by the sides with the pole. Still as the range of adjustment on the short arm is limited, the pressure upon the two sides of the pulley 10 would scarcely be aHected.

By locating pulley 11 in the angle formed by the pole and the long lever the end of this lever is caused to have several times the Inovement which it would possess if the pulley were not used. Thus greatly unequal forces may be balanced at the outer ends of the two levers, and by adjusting' the leverage almost any application of power desired may be effected.

1 have merely indicated draft-attaching means at the outer end of each lever. It is evident that the character of such means may be varied as the length of the levers and the points of attachment of the ends of the chain are changed to suit various conditions, and I wish to reserve to myself the right to make all such changes in the details of construction and proportions of parts.

What is claimed as new is- 1. In a device of the character described, a pole, two levers pivoted in alinement with each other on opposite sides thereof, a fixed guide centrally-pivoted member on the pole in rear of said levers, and asecond fixed guide member located in the angle formed by one of the levers with the pole; combined with a ieXible connector secured at its ends to the two levers and passing in rear of the Erst guide member, forming two sides of an an- A gle, one of said sides passing inside the second guide member forming a rentrant angle.

2. In a device of the character described, a pole, two levers pivoted on opposite sides thereof, a pulley mounted directly on the pole in rear of said levers, a bracket rigidly secured to the pole, a pulley mounted thereon, and standing in the angle formed by one of the levers with the pole; combined with a flexible connector secured at its ends to the two levers and passing in rear of the rst pulley orming the two sides of an angle which stand at substantially the same angle to the pole, one of`said sides passing inside the second pulley and forming a rentrant angle.

3. In a device of the character described, a pole, two unequal levers pivoted on opposite sides thereof, a pulley mounted directly on the pole in rear of said levers, a second pulley mounted fiXedly in the angle formed by the longer lever with the pole and between the first pulley and the levers; combined with a single chain secured at its ends to the levers and passing in rear of the first pulley diverging from the pole at the two sides of an angle, said sides forming substantially equal angles, one of the sides passing inside the second pulley forming a rentrant angle, the distance from the pivot of the longer arm to the point of attachment of the connector thereto being greater than such distance on the shorter lever.

In testimony whereof I have hereunto subscribed my signature this the 25th day of April, A. D. 1904.

VILLIAM T. SEELYE.

Vitnesses:

W. L. CONVERSE, DAY L. GRANNIR. 

